JPH1164929A - Lens shield device for optical instrument - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lens shield device for an optical instrument which is constituted to manually open a shield cover, only when a user tries to use the optical instrument and automatically close the shield cover, not for exposing a lens, in a state where the optical instrument is not used, in the optical instrument whose lens (including an image receiving part for a CCD camera as well) is exposed to the outside. SOLUTION: The lens shield device for the optical instrument is provided with the shield cover 3 which is free to open/close and capable of shielding the lens 1a, locking means 5, 6 and 7 which can be engaged with the shield cover 3 in its opened state and an engagement releasing means for releasing the engagement of the cover locking means, after the shield cover 3 is opened and then, a specified time lapses or after the use of the optical instrument is completed and then, the specified time lapses. Force in the closing direction is always exerted on the shield cover 3 by a compressive coil spring 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to an external lens (herein, a lens means a CC lens in addition to a normal optical lens).
In an optical device where the image receiving unit of the D camera is also exposed), the shielding cover is manually opened only when trying to use the optical device, and the lens is not exposed in a state where the optical device is not used. Thus, the present invention relates to a lens shielding device of an optical device configured to automatically close the shielding cover.

[0002]

2. Description of the Related Art In a conventional photographing apparatus such as an optical camera or a video camera, a lens collides with or contacts various objects or foreign matters while carrying the camera.
In order to prevent the lens from being damaged, a shielding cover for protecting the lens is provided so as to be openable and closable (Japanese Patent Laid-Open No. 4-34)
528, JP-A-7-281254 and JP-A-9-96853).

However, when an optical device that exposes a lens is installed in a room, the lens is not likely to be damaged. Therefore, a protective shielding cover is not usually provided.

[0004] However, if the lens is always exposed, a person entering the room tends to have a sense of privacy infringement that the optical device is constantly monitored or photographed.

[0005]

SUMMARY OF THE INVENTION The present invention relates to an invention of a lens shielding apparatus for an optical device which solves such a problem, and in an optical device in which a lens is exposed, the lens is openably and closably shielded. Shielding cover
Locking means that can be locked to the shielding cover in an open state;
An unlocking unit that unlocks the cover locking unit after a lapse of a predetermined time after the shielding cover is opened or after a lapse of a predetermined time after the use of the optical device is completed; The device is installed at a certain location, and a force is always applied to the shielding cover in a closing direction.

The invention according to claim 1 of the present application is configured as described above, so that when the locking of the cover locking means to the shielding cover is released, the shielding cover is closed, As a result of the lens being shielded so as not to be exposed to the outside by the shielding cover, a person facing the optical device installed at a certain place cannot see the lens and is constantly monitored or photographed. There is no feeling of privacy infringement and you can spend comfortably.

When the optical device is to be used, if the shielding cover is opened by hand, the shielding cover is locked by the cover locking means in the opened state. Can be used.

[0008] After a lapse of a predetermined time after the shielding cover is opened, or after a lapse of a predetermined time after the use of the optical device is completed, the lock release means operates, and
Since the lock of the cover locking means is released, even if a person using the optical device has just come out of the optical device installation location, the shielding cover is automatically closed, and then the optical device is closed. It does not give anxiety due to the exposure of the lens to the person who meets.

Further, since a force is always applied to the shield cover in the closing direction, the lens can be reliably shielded without being affected by a failure of the motor for driving the shield cover or a power failure.

Further, by configuring the invention as described in claim 2, the operation of an optical device capable of photographing and monitoring can be prevented, and a sense of privacy infringement can be avoided.

According to the third or fourth aspect of the present invention, it is possible to form a shielding cover suitable for the shape of the case of the optical device and the arrangement of the device components in the case. .

Further, by configuring the invention as described in claim 5, the cover locking means can be simply configured, and there is a power failure, a failure in the power supply circuit, or no control. Even if the shielding cover is opened by hand, the shielding cover is automatically locked and the open state can be maintained.

According to the present invention, the cover locking means can be simply constructed, and the shielding cover is opened only when the optical device is set in a use state. Thus, even if the shielding cover is manually opened without setting the use state, the exposure state of the lens cannot be maintained and the exposure of the lens can be reliably prevented.

Further, by configuring the invention as described in claim 7, it is possible to prevent the shielding cover from being half-opened beforehand, and to operate the optical apparatus in a state without any trouble.

According to the present invention, even if the optical device is not set to a use state and the cover is opened, the cover is opened by the cover locking means. When the hand cannot be locked in the state and the hand is released from the shield cover, the shield cover closes, the exposure of the lens is prevented, and the trouble due to the lens exposure is avoided.

Further, by configuring the invention as described in claim 9, the set time is short, and there is no inconvenience such as a mainspring that it is difficult to adjust the set time, that is, the set time is relatively long and Adjustment of the set time can be easily performed, and a device having a simple mechanical structure can be obtained.

Further, by constructing the present invention as described in claim 10 or 11, only by releasing the lock of the cover locking means, no power is required at all and the shielding cover can be removed. It can be closed automatically and reliably.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention shown in FIGS. 1 to 6 will be described below.

The CCD video camera 1 is installed in a guest room (not shown) of a leisure hotel.
The video camera 1 is surrounded by a case 2, and an image receiving unit 1 a of the CCD video camera 1 is exposed outside the case 2.

Further, a shielding cover 3 is attached to the case 2 so as to be reciprocally movable to the left and right at a position outside the image receiving portion 1a of the CCD video camera 1, as shown in FIGS. A compression coil spring 4 is interposed between the spring receiving portion 3a of the shielding cover 3 and the spring receiving portion 2a of the case 2, and the shielding cover 3 is always closed by the spring force of the compression coil spring 4 as an elastic force. It is urged in the direction. As shown in FIG. 3, the upper and lower edges 3b of the shielding cover 3 are bent outward at right angles, and the upper and lower bent portions 3b of the shielding cover 3 are engaged with the guide grooves 2b of the case 2. I have.

Further, a solenoid 5 is disposed in the case 2 adjacent to the image receiving section 1a of the CCD video camera 1, and a latch 6 is formed at a tip of a movable section of the solenoid 5, so that the solenoid 5 is not energized. Then, the latch 6 of the solenoid 5 is urged in the projecting direction by the spring force of the return coil spring 7 built in the solenoid 5, and when the shielding cover 3 is fully opened, the latch 6 of the solenoid 5 projects. , The edge of the shielding cover 3 engages with the latch 6, and the shielding cover 3 is in the fully opened state.
To be locked.

Further, with reference to FIG. 4, the control circuit 8 of the CCD video camera 1 and the solenoid 5 will be described.

The control circuit 8 comprises a CCD video camera 1,
The CPU 9 controls the operation of the driver 13 and the print system 14, the input / output device I / O 10 for inputting / outputting the shooting start / end information of the CCD video camera 1 to / from the CPU 9, and data such as a predetermined program. ROM 11, a RAM 12 for reading or writing information in CPU 9, and a C in response to a solenoid operation signal of CPU 9.
A driver 13 applies a required voltage to the PU 9. The CPU 9 starts a solenoid operation signal after a lapse of a predetermined time after the photographing of the CCD video camera 1 is completed.

A print system 14 built in the case 2 is connected to the CPU 9, and a control signal from the CPU 9 causes an image photographed by the CCD video camera 1 to be printed by the print system 14. The paper is discharged from the print discharge port 2C of the case 2.

Note that a photographing start push button switch 15 and a print push button switch 16 are provided on the front of the case 2.
When the video camera 1 starts photographing and presses the print push button switch 16, the print system 14 operates.

Since the embodiment shown in FIGS. 1 to 6 is configured as described above, in the normal state, the shielding cover 3 is closed and the CCD video camera 1 of the CCD video camera 1 is closed as shown in FIG. The image receiving unit 1a is shielded by the shielding cover 3, so that even if a guest enters the guest room where the CCD video camera 1 is installed, the guest is monitored by the image receiving unit 1a of the CCD video camera 1. Not only does not receive such an impression, but also does not receive the impression that the indoor activity is recorded, and can have a relaxed feeling without violating privacy.

When the guest wants to take a commemorative photo of the same guest in the cabin, when the shield cover 3 is fully opened by hand, the latch 6 of the solenoid 5 projects by the spring force of the return coil spring 7, and the cover Reference numeral 3 is latched by the latch 6, and the image light receiving portion 1a of the CCD video camera 1 is exposed and becomes ready for photographing. When the photographing start push button switch 15 is pressed, the CCD video camera 1 operates and the required Photographing is performed.

Thereafter, when the print push button switch 16 is depressed, the print system 14 operates, and the required photograph is discharged from the print discharge port 2C of the case 2.

When a predetermined time elapses after photographing of the CCD video camera 1, a solenoid operation signal is transmitted from the CPU 9 to the driver 13, the driver 13 is operated, and the solenoid 5 is energized by the operation of the driver 13, and the return coil is turned on. Since the latch 6 is retracted by overcoming the spring force of the spring 7 and the locking of the shielding cover 3 with the latch 6 is released, the photographer does not need to manually close the shielding cover 3 after photographing is completed. However, the shielding cover 3 is automatically closed by the spring force of the compression coil spring 4, and the image receiving portion 1a of the CCD video camera 1 is shielded by the shielding cover 3, so that not only the person who took the photograph, Thereafter, those who enter this room do not feel privacy infringement.

Further, since the latch 6 cannot be engaged with the edge of the shield cover 3 unless the shield cover 3 is fully opened, the CCD video camera 1 starts photographing with the shield cover 3 half open. The photographing can be performed with a sufficient exposure without performing.

In the embodiment shown in FIGS. 1 to 6, the CCD video camera 1 is not set to the use state,
Even if the solenoid 5 is not energized, when the shield cover 3 is fully opened by hand, the latch 6 is locked to the edge of the shield cover 3 by the spring force of the compression coil spring 4. Is closed, the power supply to the solenoid 5 is stopped, the latch 6 is retracted, the opening of the shielding cover 3 cannot be held manually, and the CCD video camera 1 is set to the use state. Only when the solenoid 5 is energized, the opening of the shielding cover 3 can be held by the projection of the latch 6 so that the shielding cover 3 can be held even though there is no intention to take an image. Can be opened to prevent the image light receiving portion 1a of the CCD video camera 1 from being exposed by mischief.

In the CPU 9, a solenoid operation signal is transmitted to the driver 13 after a lapse of a predetermined time after the photographing is completed. However, the set time may be appropriately extended or shortened.

Further, in the embodiment shown in FIGS. 1 to 6, the shielding cover 3 has a flat plate shape.
The shielding cover 3 may be configured in a channel shape as shown in FIG.

Further, in the embodiment shown in FIGS. 1 to 9, the shielding cover 3 is provided so as to be openable and closable left and right. However, the shielding cover 3 is provided so as to be freely openable and closable up and down. May be automatically closed.

Further, in the embodiment shown in FIGS. 1 to 9, the shielding cover 3 is formed in a flat plate shape and is attached to the case 2 so as to be slidable left and right.
As shown in FIGS. 10 to 13, the shielding cover 3 may be formed in a part of a cylindrical shape, and the shielding cover 3 may be opened and closed along the cylindrical surface of the shielding cover 3.

In the embodiments shown in FIGS. 10 to 13, a compression coil spring 4 (not shown) for constantly urging the shielding cover 3 in the closing direction is provided.

In the embodiments shown in FIGS. 10 to 13, the shielding cover 3 is formed in a cylindrical shape. However, the shielding cover 3 is formed in a disk shape or a fan shape, and reciprocates around the center of the disk or the fan shape. You may make it rotate.

Further, in the above-described embodiment, a CCD video camera, which is a photographing device, is used as an optical device. However, the present invention can be applied to optical devices such as a projector and a projector which may be mistaken as a surveillance camera. It is.

[Brief description of the drawings]

FIG. 1 is a perspective view of an embodiment of a lens shielding device of an optical apparatus according to the present invention.

FIG. 2 is a perspective view of the lens shielding device of FIG. 1 in a cover open state.

FIG. 3 is a cross-sectional side view cut along the line III-III of FIG. 1;

FIG. 4 is a control circuit diagram in the embodiment of FIG.

FIG. 5 is an explanatory longitudinal sectional plan view showing a state in which a cover is closed in the embodiment of FIG. 1;

FIG. 6 is an explanatory vertical cross-sectional view of the embodiment of FIG. 1 with a cover opened.

FIG. 7 is a perspective view of a cover closed state according to another embodiment of the present invention.

FIG. 8 is a perspective view of the embodiment of FIG. 7 in a cover open state.

9 is a cross-sectional side view cut along the line IX-IX of FIG. 7;

FIG. 10 is a perspective view of a cover closed state according to still another embodiment of the present invention.

FIG. 11 is a perspective view of the embodiment of FIG. 10 in a cover opened state.

12 is a vertical cross-sectional view cut along the line XII-XII in FIG.

13 is a cross-sectional side view cut along the line XIII-XIII in FIG.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... CCD video camera, 2 ... Case, 3 ... Shielding cover, 4 ... Compression coil spring, 5 ... Solenoid, 6 ...
Latch, 7: Return coil spring, 8: Control circuit, 9
... CPU, 10 ... I / O, 11 ... ROM, 12 ... RAM, 13 ...
Driver, 14 ... Printing system, 15 ... Shooting start button switch, 16 ... Printing button switch.

Claims (11)

[Claims] 1. An optical device in which a lens is exposed, a shielding cover that can open and close the lens, a locking unit that can be locked to the shielding cover in an open state, and the shielding cover being opened. After a predetermined time elapses, or after a predetermined time elapses after the use of the optical device is completed, the lock device includes unlocking means for unlocking the cover locking device, wherein the optical device is installed at a predetermined location. A lens shielding device for an optical device, wherein a force is always applied to the shielding cover in a closing direction. 2. The lens shielding device according to claim 1, wherein the optical device is a photographing device such as a camera and a video camera. 3. The lens shielding device for an optical device according to claim 1, wherein the shielding cover is provided on the optical device so as to freely reciprocate along a linear direction. 4. The lens shielding device for an optical device according to claim 1, wherein the shielding cover is provided on the optical device so as to be reciprocally movable along a rotation direction. 5. The lens shielding device for an optical device according to claim 1, wherein said cover locking means is a movable portion of a solenoid protruding in a non-energized state. 6. The lens shielding device for an optical device according to claim 1, wherein said cover locking means is a movable portion of a solenoid which protrudes in an energized state. 7. The apparatus according to claim 1, wherein the cover locking means is configured to be unable to lock to the shielding cover unless the shielding cover is fully opened.
7. A lens shielding device for an optical device according to claim 6. 8. The apparatus according to claim 1, wherein said cover locking means is configured to be unable to lock to said shielding cover in an open state unless said optical device is set to a use state. A lens shielding device for an optical device according to any one of claims 1 to 7. 9. The lock release means comprises a counter for counting the time after opening the shielding cover or using the optical device, and a driver for operating the solenoid after a predetermined time has elapsed at the counter. 9. The lens shielding device for an optical device according to claim 1, wherein the lens shielding device is an optical device. 10. The lens shield of an optical device according to claim 1, wherein the shield cover is closed by an elastic force of an elastic member such as a spring, soft rubber, or a gas spring. apparatus. 11. The lens shielding device for an optical device according to claim 1, wherein the optical device is always held in the same posture, and the shielding cover is closed by gravity. .